CN105275410B - A kind of induction logging centralizer and application method - Google Patents
A kind of induction logging centralizer and application method Download PDFInfo
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- CN105275410B CN105275410B CN201510697449.2A CN201510697449A CN105275410B CN 105275410 B CN105275410 B CN 105275410B CN 201510697449 A CN201510697449 A CN 201510697449A CN 105275410 B CN105275410 B CN 105275410B
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- Prior art keywords
- righting
- magnetic patch
- centralizer
- regulation
- collet
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Abstract
The invention discloses a kind of induction logging centralizer and application method, belong to oil reservoir logging field.The invention includes collet, regulation magnetic patch is connected with the upper surface of the collet, slideway and sliding pallet are fixed with the upper surface of the collet, righting head is connected with sliding pallet, righting magnetic patch is connected with the righting head, induction logging instrument is threaded with by described in the lower surface of the collet.By using the principle of " identical charges repel each other; there is a natural attraction between the sexes " in magnetic field, realize the adjustment and righting to induction logging instrument, the defects of reducing centering effect difference existing for mechanical centralizer, avoid mechanical centralizer long-term use simultaneously and cause telescopicing performance to decline, the defects of so as to cause use cost high.
Description
Technical field
The invention belongs to oil reservoir logging field, more particularly to a kind of induction logging centralizer and application method.
Background technology
Induction logging utilizes electromagnetic induction principle Study of Strata electric conductivity, is the important composition portion of resistivity logging technology
Point.The requirement of induction logging instrument keeps good middle position when being worked in wellhole, when wellhole has certain angle of inclination,
Instrument can be inclined to wellhole side because of deadweight, produce considerable influence to accuracy of measurement, it is therefore necessary to using centralizer to instrument
Device carries out righting.
At present in technology, the mechanical centralizer of generally use, when this centralizer carries out righting to instrument, because itself is tied
The limitation of structure, the outside dimension being installed on instrument is larger, when instrument works in the wellhole of small diameter, at centralizer support arm
Near dead-centre position, uprighting force is small, causes the centering effect of instrument poor.In addition under the instrument with mechanical righting structure
After well, centralizer is in running order all the time, and abrasion for a long time causes the telescopicing performance of centralizer to decline, centralizer it is frequent more
Change and increase logging cost.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of induction logging centralizer, the induction logging is helped
Positive device, including：
Collet, regulation magnetic patch, the regulation magnetic patch are connected through a screw thread in the central area of the upper surface of the collet
Central shaft and the collet center overlapping of axles；
Slideway has been connected through a screw thread in the upper surface of the collet, has been provided with along the slideway and carries out in the slideway
The sliding pallet radially slided, righting head is threaded with by described on the sliding pallet, closes on the regulation in the righting head
The side of magnetic patch is threaded with righting magnetic patch by described；
In the lower surface of the collet induction logging instrument is threaded with by described.
Optionally, the side that the regulation magnetic patch is closed in the righting head is threaded with righting magnetic by described
Block, including：
The righting head is semicylinder, and the outside cambered surface of the righting head points to the well logging borehole wall；
The inner side plane of the righting head is threaded with righting magnetic patch by described.
Optionally, the regulation magnetic patch includes：
Magnetic core is adjusted made of ferrite, regulating winding is wound with outside the regulation magnetic core.
Optionally, the righting magnetic patch includes：
The righting magnetic core made of electrical pure iron, righting coil is wound with outside the righting magnetic core.
Optionally, the application method includes：
It is powered to regulation magnetic patch, righting of the magnetic field suction positioned at the regulation magnetic patch both sides is produced by the regulation magnetic patch
Magnetic patch, make the righting magnetic patch drive sliding pallet close to the regulation magnetic patch on slideway, realize the closure of centralizer；
It is same into the regulating winding and the righting coil when induction logging instrument, which reaches predeterminated position, starts detection
Shi Tong electricity, now the regulating winding and the righting coil produce magnetic field in opposite direction so that the sliding pallet is in slideway
The Slideslip to outside the centralizer, realize the expansion of the centralizer；
At the end of the induction logging instrument measures, stop to the righting coil electricity, the sliding pallet is in the cunning
Drawn close on road to the regulation magnetic patch, realize the closure of the centralizer.
The beneficial effect that technical scheme provided by the invention is brought is：
By using the principle of " identical charges repel each other, and there is a natural attraction between the sexes " in magnetic field, realize adjustment to induction logging instrument and
Righting, the defects of reducing centering effect difference existing for mechanical centralizer, while avoid mechanical centralizer long-term use and make
Decline into telescopicing performance, the defects of so as to cause use cost high.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of induction logging centralizer provided by the invention；
Fig. 2 is the position relationship signal of the righting head and righting magnetic patch of a kind of induction logging centralizer provided by the invention
Figure；
Fig. 3 is a kind of regulation relation schematic diagram of induction logging centralizer provided by the invention；
Fig. 4 is a kind of application method schematic flow sheet of induction logging centralizer provided by the invention.
Embodiment
To make the structure of the present invention and advantage clearer, the structure of the present invention is made further below in conjunction with accompanying drawing
Description.
Embodiment one
The invention provides a kind of induction logging centralizer, the induction logging centralizer, including：
Collet, regulation magnetic patch, the regulation magnetic patch are connected through a screw thread in the central area of the upper surface of the collet
Central shaft and the collet center overlapping of axles；
Slideway has been connected through a screw thread in the upper surface of the collet, has been provided with along the slideway and carries out in the slideway
The sliding pallet radially slided, righting head is threaded with by described on the sliding pallet, closes on the regulation in the righting head
The side of magnetic patch is threaded with righting magnetic patch by described；
In the lower surface of the collet induction logging instrument is threaded with by described.
In force, in order to solve the defects of mechanical centralizer is present in the prior art, the invention provides one kind to feel
Should be logged well centralizer, and the centralizer uses the principle of " identical charges repel each other, and there is a natural attraction between the sexes " in magnetic field, realizes to induction logging instrument
Adjustment and righting, reduce the defects of centering effect existing for mechanical centralizer is poor, use cost is high.The induction logging is helped
The detailed construction of positive device is as shown in Figure 1.
Fig. 1 is the structure diagram of the induction logging centralizer, in order to make it easy to understand, each part in centralizer is carried out
Simplify.Wherein collet 1 is the main load bearing component of the centralizer, and regulation magnetic is fixed with the central area of the upper surface of collet 1
Block 2, the regulation magnetic patch 2 are threadedly attached on collet 1, and in order to improve the accuracy of centralizer work, it is necessary to fill
Timing ensures to adjust the central shaft of magnetic patch and the center overlapping of axles of collet.
Slideway 3 is fixed with other regions of the upper surface of collet 1, carries out the two again by the mode of threaded connection
It is fixed.Sliding pallet 4 is provided with slideway 3, the sliding pallet 4 can carry out the radial direction cunning closer or far from the center of collet 1 in slideway 3
It is dynamic.The mode being also connected through a screw thread on sliding pallet 4 is fixed with righting first 5, and the side that regulation magnetic patch 2 is closed in righting first 5 is consolidated
Surely there is righting magnetic patch 6, the two is fixed again by the mode of threaded connection.
In addition, it is fixed with induction logging instrument 7 in the mode that the lower surface of collet 1 is connected through a screw thread.
The operation principle of induction logging centralizer proposed by the present invention is when induction logging instrument 7 moves in the borehole wall 8, no
When needing to logging instrument righting, electric current only is passed through in magnetic patch 2 is adjusted, the surrounding of magnetic patch 2 is now adjusted and produces magnetic field, in magnetic
Effect is lower will to attract both sides righting magnetic patch 6, draw righting first 5, drive regulation magnetic patch 2 of the sliding pallet 4 to center on slideway 3 to lean on
Hold together, realize the closure of centralizer.
When the static beginning Formation Resistivity Measurement in the borehole wall 8 of induction logging instrument 7, magnetic patch 2 and righting magnetic patch 6 are adjusted
Electric current is passed through simultaneously, due to adjusting electric current access direction and the righting magnetic patch 6 of magnetic patch 2 on the contrary, therefore caused electromagnetism field direction
On the contrary, cause righting magnetic patch 6 identical in the polarity for producing magnetic field close to the side of regulation magnetic patch 2, in the effect of same sex repulsive force
Under, the sliding pallet 4 of connection righting first 5 can slide in slideway 3 to the direction level of the both sides borehole wall 8, realize the expansion of centralizer, help
Just first 5 lateral arcs apply uniform pressure in face of the borehole wall 8, reach the purpose of well medium investigation induction log instrument righting.
The present invention proposes a kind of induction logging centralizer, including collet, and regulation is connected with the upper surface of the collet
Magnetic patch, slideway and sliding pallet are fixed with the upper surface of the collet, righting head is connected with sliding pallet, connected in the righting head
Righting magnetic patch is connected to, induction logging instrument is threaded with by described in the lower surface of the collet.By using in magnetic field
The principle of " identical charges repel each other, and there is a natural attraction between the sexes ", adjustment and righting to induction logging instrument are realized, reduces mechanical centralizer
The defects of existing centering effect difference, while avoid mechanical centralizer long-term use and cause telescopicing performance to decline, so as to cause
The defects of use cost is high.
Optionally, the side that the regulation magnetic patch is closed in the righting head is threaded with righting magnetic by described
Block, including：
The righting head is semicylinder, and the outside cambered surface of the righting head points to the well logging borehole wall；
The inner side plane of the righting head is threaded with righting magnetic patch by described.
In force, the position relationship of righting first 5 and righting magnetic patch 6 is as shown in Fig. 2 from figure 2 it can be seen that righting head
(it can't see herein because sliding pallet 4 is blocked) on 5 sliding pallets 4 being fixed on above slideway 3, two rightings first 5 are respectively positioned at regulation
The both sides of magnetic patch 2, and the semicylinder of righting first 5, its outside cambered surface point to the well logging borehole wall outside centralizer, and its inner side is flat
Regulation magnetic patch 2 is pointed in face, and is threaded with righting magnetic patch 6 by described in the inner side plane of righting first 5.
Further, righting first 5 can use quality of rubber materials, and because light quality is in the movement of righting first 5, and rubber is resistance to
The characteristics of hot, wear-resisting, be advantageous to the righting work of underground induction logging instrument 7.
It can be seen from the space structure of above-mentioned part, adjust magnetic patch 2 and righting magnetic patch 6 is passed through electric current simultaneously, due to regulation
The electric current of magnetic patch 2 accesses direction with righting magnetic patch 6 on the contrary, therefore caused electromagnetic field is in opposite direction, cause righting magnetic patch 6 by
The polarity that the side of nearly regulation magnetic patch 2 produces magnetic field is identical, in the presence of same sex repulsive force, connects the meeting of sliding pallet 4 of righting first 5
To the horizontal slip in direction of the both sides borehole wall 8 in slideway 3, the expansion of centralizer is realized, the lateral arcs of righting first 5 face the borehole wall 8
Apply uniform pressure, reach the purpose of the righting of well medium investigation induction log instrument 7.
Optionally, the regulation magnetic patch includes：
Magnetic core is adjusted made of ferrite, regulating winding is wound with outside the regulation magnetic core.
In force, the effect of righting is carried out to induction logging instrument in order to realize to be powered, regulation magnetic patch 2 is by regulation magnetic core
21 and it is wound with regulating winding 22 outside regulation magnetic core 21 and forms.According to electromagnetic induction principle, energy after regulating winding 22 is powered
Enough produce magnetic field.
Optionally, the righting magnetic patch includes：
The righting magnetic core made of electrical pure iron, righting coil is wound with outside the righting magnetic core.
In force, the effect of righting is carried out to induction logging instrument in order to realize to be powered, righting magnetic patch 6 is by righting magnetic core
61 and righting coil 62 is wound with outside righting magnetic core 61 forms.According to electromagnetic induction principle, energy after regulating winding 22 is powered
Enough produce magnetic field.
In the present embodiment, as shown in figure 3, being all N levels between left side righting magnetic patch 6 and regulation magnetic patch 2, right side righting magnetic
All it is S levels between block 6 and regulation magnetic patch 2.In the presence of same sex repulsive force, the sliding pallet 4 of connection righting first 5 can be in slideway 3
The horizontal slip in direction to the both sides borehole wall 8, realizes the expansion of centralizer, applies uniform pressure to the borehole wall 8 on the outside of the circular arc of righting first 5
Power, reach the purpose of well medium investigation induction log instrument righting.
The present invention proposes a kind of induction logging centralizer, including collet, and regulation is connected with the upper surface of the collet
Magnetic patch, slideway and sliding pallet are fixed with the upper surface of the collet, righting head is connected with sliding pallet, connected in the righting head
Righting magnetic patch is connected to, induction logging instrument is threaded with by described in the lower surface of the collet.By using in magnetic field
The principle of " identical charges repel each other, and there is a natural attraction between the sexes ", adjustment and righting to induction logging instrument are realized, reduces mechanical centralizer
The defects of existing centering effect difference, while avoid mechanical centralizer long-term use and cause telescopicing performance to decline, so as to cause
The defects of use cost is high.
Embodiment two
The present invention provides a kind of application method of induction logging centralizer, as shown in figure 4, the application method includes：
401st, it is powered to regulation magnetic patch, magnetic field suction is produced positioned at the regulation magnetic patch both sides by the regulation magnetic patch
Righting magnetic patch, make the righting magnetic patch drive sliding pallet close to the regulation magnetic patch on slideway, realize the closure of centralizer；
402nd, when induction logging instrument, which reaches predeterminated position, starts detection, to the regulating winding and the righting coil
In be powered simultaneously, now the regulating winding and the righting coil produce magnetic field in opposite direction so that the sliding pallet is in cunning
In road to outside the centralizer Slideslip, realize the expansion of the centralizer；
403rd, at the end of the induction logging instrument measures, stop to the righting coil electricity, the sliding pallet is in institute
State and drawn close on slideway to the regulation magnetic patch, realize the closure of the centralizer.
The present embodiment proposes a kind of application method of induction logging centralizer, and by using in magnetic field, " identical charges repel each other, different
Property is attracting " principle, realize the adjustment and righting to induction logging instrument, reduce and imitated between two parties existing for mechanical centralizer
The defects of fruit difference, while avoid mechanical centralizer long-term use and cause telescopicing performance to decline, so as to cause use cost high
Defect.
It should be noted that：A kind of induction logging centralizer that above-described embodiment provides carries out the implementation of centralizer righting
Example, only as the explanation of induction logging centralizer in actual applications, can also basis be actually needed and survey above-mentioned sensing
Well centralizer uses in other application scene, and it implements process and is similar to above-described embodiment, repeats no more here.
Each sequence number in above-described embodiment is for illustration only, does not represent the elder generation during the assembling or use of each part
Order afterwards.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (2)
- A kind of 1. induction logging centralizer, it is characterised in that the induction logging centralizer, including：Collet, regulation magnetic patch is connected through a screw thread in the central area of the upper surface of the collet, it is described to adjust in magnetic patch Mandrel and the center overlapping of axles of the collet；Slideway has been connected through a screw thread in the upper surface of the collet, has been provided with along the slideway and is carried out radially in the slideway The sliding pallet of slip, righting head is threaded with by described on the sliding pallet, closes on the regulation magnetic patch in the righting head Side be threaded with righting magnetic patch by described；In the lower surface of the collet induction logging instrument is threaded with by described；The side that the regulation magnetic patch is closed in the righting head is threaded with righting magnetic patch by described, including：The righting head is semicylinder, and the outside cambered surface of the righting head points to the well logging borehole wall；The inner side plane of the righting head is threaded with righting magnetic patch by described；The regulation magnetic patch includes：Magnetic core is adjusted made of ferrite, regulating winding is wound with outside the regulation magnetic core；The righting magnetic patch includes：The righting magnetic core made of electrical pure iron, righting coil is wound with outside the righting magnetic core.
- 2. the application method of the induction logging centralizer described in claim 1, it is characterised in that the application method includes：It is powered to regulation magnetic patch, righting magnetic of the magnetic field suction positioned at the regulation magnetic patch both sides is produced by the regulation magnetic patch Block, make the righting magnetic patch drive sliding pallet close to the regulation magnetic patch on slideway, realize the closure of centralizer；When induction logging instrument, which reaches predeterminated position, starts detection, lead to simultaneously into the regulating winding and the righting coil Electricity, now the regulating winding and the righting coil produce magnetic field in opposite direction so that the sliding pallet is in slideway to institute The outer Slideslip of centralizer is stated, realizes the expansion of the centralizer；At the end of the induction logging instrument measures, stop to the righting coil electricity, the sliding pallet is on the slideway Drawn close to the regulation magnetic patch, realize the closure of the centralizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697449.2A CN105275410B (en) | 2015-10-23 | 2015-10-23 | A kind of induction logging centralizer and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697449.2A CN105275410B (en) | 2015-10-23 | 2015-10-23 | A kind of induction logging centralizer and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105275410A CN105275410A (en) | 2016-01-27 |
| CN105275410B true CN105275410B (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510697449.2A Expired - Fee Related CN105275410B (en) | 2015-10-23 | 2015-10-23 | A kind of induction logging centralizer and application method |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5348091A (en) * | 1993-08-16 | 1994-09-20 | The Bob Fournet Company | Self-adjusting centralizer |
| CN202117655U (en) * | 2011-07-02 | 2012-01-18 | 中国石油集团测井有限公司 | Centering guide special for horizontal well imaging logging |
| EP2751380A1 (en) * | 2011-09-20 | 2014-07-09 | Imdex Global B.V. | Borehole surveying tool deployment |
| CN204457486U (en) * | 2015-01-04 | 2015-07-08 | 中国石油天然气股份有限公司 | Automatically controlled centralizer |
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2015
- 2015-10-23 CN CN201510697449.2A patent/CN105275410B/en not_active Expired - Fee Related
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| CN105275410A (en) | 2016-01-27 |
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